Hi Jason,
For the initializing screen here are some existing threads on this issue and how you can approach it Experiment won't play, stuck on "initializing" in Pavlovia - #2 by Becca
What I would recommend if when on that page right click and select “inspect” - select the “console” tab an any error messages will be displayed in there - you can then show those error messages in this thread for further support.
Best wishes,
Becca